Bi-conical support tube for textile threads



Aug. 22, 1961 R. sIBlLLE BT-coNTcAL sUPPoRT TUBE: FOR TEXTILE: THREADS Filed 001;. 21, 1957 l NVE NTO@ Qm cui; @Mmm United States Patent 2,997,252 BI-CONICAL SUPPORT TUBE FOR TEXTILE THREADS Ren Sibille, Paris, France, assignor to Papeteries Ren Sibille, Pont-Eveque, Isere, France, a French body corporate Filed Oct. 21, 1957, Ser. No. 692,019 vClaims priority, application France Apr. 25, =1957 6 Claims. (Cl. 242-118-3) The present invention relates to bi-conical support tubes for textile threads on which the threads are wound to obtain a twisting of the thread, during this winding. The bi-conical shape of these tubes permits winding thereon great lengths of thread without danger of collapse.

At the present time, solid elements obtained by moulding and notably composed or plastic material are used as bi-conical support tubes. The support tubes thus constructed are heavy and easily broken and their cost price is high. Thus, they can only be used within the factory, which necessitates unwinding the thread lfrom the tube and winding it on an ordinary tube of paper before dispatching the thread to the user.

The object of the invention is to remedy these disadvantages in providing a bi-conical support tube which is lighter and cheaper and can be used as a subsequently discarded packing means sent to the thread user. 'Ihis permits eliminating the rewinding of the thread before dispatch with the corresponding advantages.

The support tube according to the invention is characterized in that it comprises a cylindrical or conical inner tube and two part-conical members assembled on the inner tube, the cross-sectional shape of the small ends of said members corresponding to the outer cross-sectional shape of the tube whereas their large ends are held centrally of the tube by blocking means.

Advantageously, the blocking means of the conical members are formed by the rolled edges of these members.

Further features and advantages of the invention will be apparent from the ensuing description with reference to the accompanying drawing, to which the invention is in no way limited.

In the drawing:

FIG. l a longitudinal axial sectional view of a first embodiment of the invention;

FIG. 2 is a similar view of a modication of the invention, and

FIG. 3 is a similar view of another modication of the invention.

In the embodiment shown in FIG. 1, the bi-conical support tube comprises an inner tube 1 on which are mounted two part-conical members 2.a and 2b. The inner tube 1 can be cylindrical or slightly tapered as shown in FIG. 1 so as to be adaptable for use on the spindle of a winding machine. The upper edge of the tube 1 could be rolled or formed inwardly as shown at 3 in FIG. 1, so as to constitute means whereby a hold can be obtained on the tube to withdraw it from the winding machine spindle.

The small base 4 of each of the attached part-conical members 2EL and 2b corresponds in shape to the outer wall of the tube 1. It is held centrally of the tube 1, at its large base 5 by blocking means which is formed, in the presently-described embodiment, by the rolled edge 6 of each member 2a or 2b which is fixed to the outer face of the tube 1 by an adhesive.

The two members 2, 2b are in contact with one another at their small base 4 where they may .be interconnected by an adhesive.

This arrangement, however, is not essential and FIG. 2. shows another embodiment of the invention which ICC may be used especially for longer support tubes. This second embodiment is identical to that shown in FIG. 1, except that the two part-conical members 2' and 2b do not touch one another but are separated by a sleeve 7 the shape of which corresponds to the shape ofl the tube 1 in its intermediate part. The members 2,a and 2b abut the ends of the sleeve 7 at their small bases 4. The various members of the support tube may -be connected to one another by an adhesive to enhance the rigidity of the unit.

FIG. 3 shows a third embodiment similar to that shown in FIG. 2 except that no sleeve 7 is provided. The small bases of the part-conical members 2' and 2b, attached to the inner tube 1 by -an adhesive, are tapered or thinned down at 8, for example by a grinding operation, to avoid any step in the region of the joint. The embodiment shown in FIG. 3 is therefore simpler than that shown in FIG. 2 and more easily mass-produced.

The support tube embodying the invention can be made of any suitable material, such as paper, cardboard or plastic material. They have numerous advantages over heavy bi-conical support tubes used heretofore. Their manufacture is simpler and does not require a complicated mould. They are lighter and much cheaper. Thus they can be delivered directly to the customer in the form of subsequently discarded packing means after the winding and twisting of the thread.

Thus, the additional twisting operation at present required in the factory is avoided, this twisting operation consisting in unwinding the thread from the support tube and Winding it on a paper tube more suitable for dispatching to the customer.

Thus, a considerable saving in labour and in the workshop space needed for the conventional method is eifected. This permits a considerable reduction in the cost price of the twisting operation and increased production.

Although specific embodiments of the invention have been described, many modifications and changes may be made therein without departing from the scope of the invention as dened in the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. Bi-conical support tube for textile threads, comprising an inner tubular member having an inwardly rolled edge at one of its ends so as to reduce the inner crosssectional area of said one end into which can thus be tted the winding spindle of a winding machine, two partconical members mounted on said inner member with their small ends turned toward one another, the small end of each of said part-conical members having a crosssectional size substantially identical to the outer crosssectional size of said inner member and the large end of each of said part-conical members having an inwardly rolled edge so as to reduce the inner cross-sectional area of said large end so that said area is substantially equal to the outer cross-sectional area of said inner member, each of said part-conical members being adhesively secured by means of its rolled edge to said inner member and the rolled edge of one of said part conical members being adjacent to the rolled edge of said one end of said inner member.

2. Bi-conical support tube as claimed in claim 1, wherein said inner member is conical, said one end having the inwardly rolled edge being the small end.

3. Bi-conical support tube for textile threads, comprising an inner tubular member having an inwardly rolled edge at one of its ends so as to reduce the inner crosssectional area of said one end into which can thus be tted the winding spindle of a winding machine, two part-conical members mounted on said inner member with their small ends in abutting relationship, the small end of each of said part-conical members having a crosssectional size substantially identical to the outer crosssectional size of said inner member and the large end of each of said part-conical mem-bers having an inwardly rolled edge so as to reduce the inner cross-sectionalarea of said large end so that said area is substantially equal to :the outer cross-sectional area of said inner member, each of said part-conical members being adhesively secured by means of its rolled edge to said inner member and the rolled edge of one of said part conical members being 4adjacent to the rolled edge of said one end of said inner member.

4. Biconical support tube for textile threads, comprising an inner tubular member having an tinwardly rolled edge at one of its ends so as to reduce the inner v cross-sectional area of said one end into which fcan thus be tted the winding spindle of a Winding machine, two

part-conical members mounted on said inner member with their small ends turned toward and spaced apart -from one another, the small end of each of said partconical members having a cross-sectional size substantially identical to the outer cross-sectional size of said inner member and the large end of each of said part-conical members having an inwardly rolled edge so as to reduce the inner cross-sectional area of said large end so that said larea is substantially equal to the outer cross-sectional area of said inner member, each of said part-conical members ybeing adhesively secured by means of its rolled edge to *said inner member and the rolled edge 0f one of said part conical members being adjacent to the rolled edge of said one end of said inner member.

5.: Bi-conical support tube as. claimed in claim 4, wherein said small end of said part-conical members has a ch'amfered edge by which it is connected and cemented to the outer wall of said inner member.

6. Bi-concal support tube for textile threads, comprising an inner tubular member having an inwardly rolled edge at one of its ends so as to reduce the inner cross-sectional area of said one end into which can thus be tted the winding spindle of a winding machine, a sleeveV mounted without `clearance on said innerl member and having a length less'than the latter so as to provide at each endof'the'innermember an .uncovered part,

".two part-conicalrnembers each of which iszmounted on Yeach of said part-conical members being adhesively secured bymeans ofits rolled edge to said inner member and the Arolled edge of one of said part conical members being adjacent to the rolled edge of said one end of said inner member.

' References Cited inthe ile of'this patent UNITED STATES PATENTS Re. 23,046 -'Blanchet Y.. Oct. 26, 1948 v227,281 McCausland- May 4, 1880 687,562 Hendrick Nov. 26, 1901 I'2,518,533 "Edwards Aug. 15,1950

' FOREIGNA PATENTS l319,013 France Iuly 10, 1902 1,093,596 France Nov. M, 1954 

